Laboratory distillation apparatus



Dec. 27, 1932. s. CHARLESWORTH ET AL 1,892,609

LABORATORY DISTILLATION APPARATUS Filed June 16, 1931 a mdw M m; L 4 e nfi 5 mm. 45 7w 7 Patented Dec. 27, 1932 warren stares ra'rsnr was STANTON I. CHARLESWORTH, OF CLEVELAND HEIGHTS, AND ARCH HARRIS, OF

CLEVELAND, OHIO I LABORATORY DISTILLATION APPARATUS Application filed June 16,

Our invention relates to a distillation apparatus for laboratory use in testing light oils, benzol products and the like.

The apparatus generally used for such tests incorporates a Bunsen burner to heat a test flask connected to a distillation tube, the burners flame being regulated so that the distillation proceeds at a predeterinmed rate, and finally being extinguisheiat the proper time,

1 so that the dry point of the liquid under test may be ascertained. Because of the open flame involved such apparatus is necessarily excluded from buildings in which volatile liquids are stored in any quantity, resulting in the inconvenience that the tests must generally be conducted at points remote from the source of supply. In any event, these tests are always attended by a certain explosion risk, and any air disturbance will cause the flame to waver so as to result in inaccurate results.

One of our objects is to provide an apparatus for conducting such tests without the necessity of an open flame. Another object is to provide a novel distillation apparatus. Other objects may later become apparent.

In the drawing:

Figure 1 is an end elevation of an example of the distillation apparatus constructed in accordance with our invention.

and 6 being in cross section.

Having reference to this drawing, the speciflc example of our invention there shown comprises a steam manifold 1 from which a plurality of vertical cylindrical conduits 2 lead. These conduits have control valves 3 for regulating the admission of steam to their interior.

The conduit to the left, referring to Figure 1, has its top end closed by a hollow body 4 having a deep concave surface 5 for receiving the bottom and a goodly partof the side of a test flask 6. The flask has its top stoppered and provided with a thermometer 7, and is in connection with a distilling tube 8 extending thru a water tank 9 and over a graduate 10.

1931. Serial N'o. snare.

This last arrangement is particularly illustrated in connection with the extreme right hand conduit, but it is the same thruout' our apparatus.

Some of the pure solvents maybe complete- 1y distilled during the test, and accurate results obtained without a sudden diminishing of the heat used, but it is often necessary to cause a quick heatchange to obtain the dry point of the liquid under test. In the first case the apparatus just previously described may be used, but in the latter case some means of causing a quick heat change is necessary.

This is accomplished by the arrangement shown in connection with the two conduits to the right. Each of these has its top end closed by a hollow cylindrical body 11 having a concave depression 12 for receiving the bottom of a test flask 6, a threaded collar 14 being fixed to the bottom otthis body. A cylindrical member 15 is slidingly fitted to the body above the ring 1 1, an enlarged skirt 16 depending therefrom over and in screw threaded engagement with the collar. This member has an outstanding annular flange 17 at its top and handles 18 radiating out from its skirt. The flasks are arranged and provided for distillation purposes in each instance in the manner already described.

lVhen a testhais reached the point where the heat is to be diminished, the handles 18 are used to rotate the member 15 and screw it up so that the flange17 will engage and lift the test flask up from the heating surface. As the flask is made of glass and this member of metal, there will be little tendency of the latter to rotate the former, as little friction will result between the two. The distillation rate may also be varied in this manner as well as by the use of the valves 3. 7

Although we have'shown and described a specific example of our invention in accordance with the patent statutes, we do not intend to limit the scope of our invention thereto, except as defined by the appended claims.

We claim:

1. In a distillation apparatus, a hollow body,'means for conducting heat into said body, and means carriedby said body for supporting a flask, said means being adjustable to vary the approach of the flask to said body.

2. In a distillation apparatus, a hollow body having a flask receiving depression, means for conducting heat into said body, a flask engaging member surrounding the depression in said body, and means for moving said member away from and towards this de pression.

8. In a distillation apparatus, a hollow body having a substantially straight side and a flask receiving depression in one end, means for conducting heat into said body, a flask engaging member surrounding the depression and partially extending down the straight side of said body, and means for adjustably moving said member along the straight side of said body.

4. In a distillation apparatus, a hollow cylindrical body having a flask receiving depression in one end, means for conducting heat into said body, and a cylindrical member arranged about said body in screw threaded engagement therewith and having an annular flask engaging flange at its end approximate to the depression in the end of said body.

5. In a distillation apparatus, a vertically positioned cylindrical body having a flask receiving depression in its top end, means for conducting heat into said body, a cylindrical member fitted about said body in screw threaded engagement therewith and having an annular flask engaging flange at its top end, and handles fixedto said member.

6. In a distillation apparatus for labora; tory use, a steam manifold, and a plurality o f'vertical conduits leading from said manifold and having their upper ends closedand constructed to provide a concave surface for receiving the bottom of a test flask,at least one of said conduits having a vertically movable flask engaging member surrounding its upper end, and means 'for moving said member. v

7. In a distillation apparatus for laboratory use, a steam manifold, and a plurality of vertical conduits leading from said manifold and having their upper ends closed and constructed to provide a concave surface for receiving the bottom of a test flask, at least one of said conduits having a vertically movable flask engaging member surrounding its upper end in screw threaded engagement therewith.

8. In a distillation apparatus for laboratory use, a steam manifold, and a plurality of vertical cylindrical conduits leading from said manifold and having their upper ends closed and constructed to provide a concave surface for receiving the bottom of a test flask, at least one of said conduits having a vertically movable cylindrical member surrounding its upper end, said member having an annular flask engaging flange at its top end and being in screw threaded engagement with said conduit.

9. In a distillation apparatus for labora' tory use, a steam manifold, a vertical cylindrical conduit leading from said manifold and having its upper end closed and constructed to provide a concave surface for receiving the bottom of a test flask, a cylindrical member closely fitting the upper end of said conduit for sliding movement and in screw threaded engagement therewith the top of this member being arranged approximate to the concave surface of said conduit and having an annular outstanding flange, and hand grasping means on said member so that same may be manually adjusted by rotation to cause vertical movement thereof so that said annular flan g'e may adjustably engage with and vary the approach of a test flask to the concave surface of said conduit thereby adjustably varying the heat exchange therebetween.

In testimony whereof, we have hereunto set our hands.

STANTON I. 'OHARLESWORTH. ARCH W. HARRIS. 

